Home / 890,156,387.36-1,228,253,388.72-513,675,629.48

Finding the Fourth Proportional to 890,156,387.36, 1,228,253,388.72 and 513,675,629.48

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Solution

The fourth proportional to 890,156,387.36, 1,228,253,388.72 and 513,675,629.48 is: 708,778,638.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    890,156,387.36 : 1,228,253,388.72 = 513,675,629.48 : x
  2. Step 2: Convert to fraction form
    890,156,387.36/1,228,253,388.72 = 513,675,629.48/x
  3. Step 3: Cross multiply
    890,156,387.36x = 1,228,253,388.72 × 513,675,629.48
  4. Step 4: Simplify right side
    890,156,387.36x = 630,923,832,611,689,216
  5. Step 5: Solve for x
    x = 630,923,832,611,689,216/890,156,387.36
  6. Step 6: Final answer
    x = 708,778,638.87

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.